Kingdom of The Algarve

The Kingdom of the Algarve (Portuguese: Reino do Algarve, from the Arabic Al-Gharb al-Andalus), later the Kingdom of the Algarves (Portuguese: Reino dos Algarves), was a kingdom incorporated into the Kingdom of Portugal until the proclamation of the Portuguese Republic on October 5, 1910. The kingdom was the second dominion of the Portuguese Crown and supposedly a kingdom with a law apart from Portugal, though in fact the Algarvian kingdom had no institutions, special privileges, or autonomy. In actuality, it was just an honorific title for the Algarve based on its history and was very similar to the rest of the Portuguese provinces.

The title King of Silves was first used by Sancho I of Portugal after the first conquest of Silves in 1189. As this conquest did not take all of the Algarve, D. Sancho never used the title King of Portugal and the Algarve, but instead it was adopted by his grandson Afonso III of Portugal as a part of the titles and honours of the Portuguese Crown.